Egg-tester.



No. 65l,069. Patented lune 5, I900. W. F. DUNN.

EGG TESTER.

(Application filed 591m 12, 1898.)

(No Model.)

Wallace-213500;,

Nr'rn STATES PATENT OFFICE.

IVALLACE F. DUNN, OF LA PORTE, INDIANA.

EGG-TESTER.

SPECIFICATION forming part of Letters Patent N 0. 651,069, dated June 5, 1900.

Application filed September 12, 1898. Serial No. 690,714. (No model.)

To all whom, it may concern:

Be it known that I, WALLACE F. DUNN, a citizen of the United States, residing at La Porte,lndiana,have invented certain newand useful Improvements in Egg-Testers, of which the following is a specification.

The object of my invention is to make a.

device by which the rays of light from a lamp may be so concentrated and utilized as that they will enable one to read with ease and facility an egg against which the light is focused or directed, so as to determine its quality and condition 5 and my invention consists in the features and details of construction hereinafter described and claimed.

In the drawings, Figure 1 represents a perspective View of my improved egg-tester, and Fig. 2 a longitudinal section of the same.

In making my improved egg-tester 1 construct a shade A from a piece of tin or other suitable metal bent into the form of a hollow frustum of a cone. The edges of the tin are suitably connected or united together in any desired way, so as to make a secure joint or fastening. I provide this shade,which is in the form of a hollow frustum of a cone and which for convenience I shall term the body of the tester, with a testing-hole a at one side near its lower or larger end. This hole is made of a convenient size to place an egg against it when it is desired toexamine and determine its condition. The body of the tester is also preferably mounted on legs B, so as to raise it a convenient height or distance above the bench or table on which itis placed in use and permit the free ingress of air into the body of the tester at its lower end, so that it can pass up therethrough. The body of the tester is intended to be placed over a lamp 0, which furnishes the light or illumination by which the eggs are tested. The body of the tester is held at such height as that preferably the flame of the lamp is practically above the hole a, so that in looking into the tester through the hole the flame of the lamp will not readily appear, but rather the lower portion of the burner. ney of the lamp extends up through the body of the tester to the top or above. The interior surface of the body of the tester being made of tin is bright and acts as a reflector; but in order to concentrate the rays of light The chim-- from the lamp and throw them down or back into the body of the tester, so as to secure-a high degree of light or illumination at the testing-hole, I arrange on the body of the tester at the side containing the opening an upward extension D of a less width than the full diameter of the upper end of the shade and which affords on the side on which it is placed a contin nation in effect of the inclined surface of the body of-the tester. This piece operates as a reflector for concentrating and reflecting the rays of light at one point, so as to cause them to be again thrown down into the body of the tester. This produces an extremely-bright illumination at the testing-hole, so that by placing an egg before the hole its condition can readily be read and determined. I prefer also to have the exterior surface of the body of the tester and of, the reflector painted or japanned black, as by so doing the eyes of the operator will be better protected and more satisfactory results secured.

I claim- 1. The combination of a shade in the form of a hollow frustum of a cone provided with a testing-opening adjacent to its lower end on one side, and a reflector projecting up wardly from and of a less width than the upper end of the shade and having a reflectingface continuing in the converging lines of the cone onthe sidecontaining and in line with the testing-opening and operating to concentrate the rays of light at one point and reflect them back into the interior of the shade and increase the light effect at the testing-opening, substantially as described.

2. The combination of a shade in the form of a hollow frustum of a cone provided with a testing-opening adjacent to its lower end on one side, a light-producing deviceinclosed by the shade, and a reflector of less width than and projecting upwardly from the upper end of the shade and having a reflecting face continuing in the converging lines of the cone on the side containing and in line with the testing-opening and operating to concentrate the rays of light at one point and reflect them back into the interior of the shade and increase the light effect at the testing-opening, substantially as described.

3. The combination of a shade in the form of a hollow frustum of a cone provided with a testing-opening adjacent to its lower end opening and operating to concentrate the on one side and with legs holding its lower rays of light at one point and reflect thein end a desired distance above a support and I back into the interior of the shade and inpermitting the free ingress of air, a lightcrease the light effect at the testing-opening, 5 producing device inclosed by the shade, and substantially as described.

a reflector of a less Width than and projecting upwardly from the upper end of the WALLACE DUNN shade and having a reflecting-face continu- \Vitnesses:

ing in the converginglines of the cone on the THOMAS A. BANNING,

10 side containing and in line with the tesiing- THOMAS H. MGGREGOR. 

